Anticurling device for paper sheets.



F. I. GUBELIVIAN.

ANTICURLING DEVICE FOR IAPER SHEETS.

APPLICATION FILED IMI-7. I9I6.

Patented Jan. 2, 1917.

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WIT/VESSES F. J. GUBELMN. y Amlcumm nfvlcE Foa PAPER sums.

I A'PPLICATON FILED IAN-7,1916. I LQG, Patented Jan. 2,1917.

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' To all whom t may concern:

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` Be it known that L'Fxnnnnrcn MAN, a citizen ofthe United States, residing at Englewood, county of Bergen, State of New Jersey', have invented a certaln new and useful Improvement in Anticurling Devices for Paper Sheets, of which the following is a specification. 1

My invention relates to an anti-curling device for paper sheets and the-like and has for its object to correct or neutralize any. tendency which such sheets may haye, as they are delivered'from a copying or printing press, or similar instrumentality, to curl in a fixed direction, either upwardly or downwardly.

More particularly my invention relates to y a device, of they character specified, for use with rotary copyingmachines in which letters or the like are successively copiedA by being pressed against, while being passed around, a copying roll or cylinder in contact with a suitable copy paper, the letteror copy paper, or both, being moistened; the letters after they have beenrcopied, are fed from the machine andA are then filed or mailed as the case may be.

Copying machines, as just described, find their principal use in establishments and ofces having a very considerable' amount of copying to do at one time. The letters, after,

being copied, are therefore, likely to be .fed from the machine in rapid succession.

.Owing to thev fact that the letter, while `moist, has passed over or around a roller it will ordinarily acquire a permanent set or.

curvature in the same direction as that of the roller. As each letter is delivered from the machine, therefore, upon the receiving tray, it will require to be smoothed and Hattenedlby hand if successive letters are to follow into place uniformly and with regularity and to stack one upon the other. This operation is tedious and annoying and either requires the services of an extra operator, or

requires that the machine be run more slowly v if the work of feeding the letters to the ma-,.

chine and seeing that lthey are properly stacked upon their delivery from the machine is to be performed by a single operator. By my invention herein described l avoid the just mentioned disadvantage and deliver the sheets to the receiving tray in a substantially Hat condition by impartin to each copied letter after it passes from" t e copy- J.' Gum,

meccanicamente. raeeacecaanaieia Application mea sammy 7,1916. serial ne. 70,7'21.'

4copying roll and at right angles thereto by vmi means of which the ends of the letter, as v compared with its central part, are pushed in a direction such es to establisha curva-'- ture opposite to Ithe curvature of the letter wllich/has been produced by the copying ro Myy invention willv be betterA by referring to the accompanying drawings in which- Figure 1 represents a side elevation, part section, taken along .the line 1 1 of 2, ofso much of the machineas'is necessary for an understanding of the invention; Fig. 2 is a plan view of Fig. l; 3 is a ont elevation, taken from the 'plane 3 3 of Fig. 4;v and Fig. 4 is a section takenalong the line4 4of' Fig.Q.

The drawings represent part of a rotary copying machine, including the copying roll, the delivery means, and the tray, as lemployed with a preferrd form ofvmy anti-curling device.

In the drawin the two side -ames 1 1 Y I have bearings formed therein'- or the copying roll2, the pressure roll 3,'the guide roll 4 and the feed rolls 5. 'lhe rolls are connected by gearing (not shown) Vso as to be rotated either byhand `or by motor the. A

usual way.) Y

The copy paper 6 is fed from a continuous roll (not shown) 4to and over pressure roll 3 and downwardly between said pmsureroll and copying roll 2, thence over and around the guide roll 4, being premed thereupon by auxiliary roll 4: and downwardly between the feed rolls 5 5.

A feed table 7 is supported by the frame -of the machine, forwardly of the copying roll 2, and at such height that aletter' placed thereon and pushed to the rear will slip naturally between the two rolls 2Y and 3 and so as to be carried downwardly and forwardly between the copy paper ,6 and copying roll 2. To the lower side of the feed table is fastened a thin transverse strip 8 the inner it@ free edge of which bears lightly against the copying roll just above the point 'at which the copy paper leavessaid roll.

Fixed centrally upon a pair of transverse rods 9, supported by the (removable) receiving tray 12 is a bending gulde 10, of thin metal, the upper straight edge 10 of which slopes outwardly and upwardly with respect to the plane ofthe copy'paper as established between they copy roll 2 and guide roll 4. Laterally on each side of guide 10, and at a distance therefrom preferably a little 'less than half the length of the letter which is being copied, isanother bending guidel or arm 11 supported from the under side of `the feed trayT and parallel with guide 10. The inner ends of each lower edge 11 of these lateral guides lie substantially in line horizontally withthe inner end of edge 10 of guide 10 and each of said lower edges slopes outwardly and upwardly in a plane substantially parallel to the plane of the* copy paper and very close thereto. The lower edges 11 project somewhat farther forward than does the edge 10 and the outer ends of all the edges extend over the inner side of receiving tray 12. This tray slopes slightly downwardly and forwardly.

A. rod 13, in the same vertical Iplane as central guide 10, is supported by the receiving tray just above its receiving surface and parallel thereto.

The operation of my invention is as follows: `The mechanism being started, the copy aper 6 advances continuously in the directlon of the arrows. Each letter 14, after being laid face upwardly upon the receiving table 7 and pushed back until it is gripped between the copying roll 2 and pressure roll 3, is carried downwardly and forwardly, being held in position against the copying roll 2 by the copy paper 6.y As the letter passes under the'pressure roller 3 the matter typed or written thereon is copied upon the copy paper 6 in the usual way. As the .forward edge of the letter reaches the point wherethe copy paper leaves the copying roller 2 1n its progress toward the guide roll 4 the edge of strip 8 which, as heretofore stated, is in contact with copying roll2 will insert itself between the letter and the copying roll so as to prevent their sticking toj gether. The forward edge of the letter will,

' edge 10.

therefore, slip under strip 8 and be carried forward upon the copy paper 6 and over the guide roll 4. At this point the forwardly moving edge of the letter will begin to engage the central edge 10 and the lateral edges 11. As the letter continues to move forward the ends thereof will be pressed downwardly by the edges 11 while the central part will be pressed upwardly by the A downwardbend or curvature of the letter about its central transverse portion will thus have been produced and this bend will be opposite in direction and aboutw 11 until the next successive copied letter pushes it forwardly. It will then fall upon v the receiving tray and slide downwardly thereon where its central part will be elevated by the rod 13 and its ends rest upon the surface of the receiving tray, thus maintaining the letter in substantially the same form as wasA given it by the guides 10 and 11. While I prefer to use the supporting rod 13 as just described, itis, nevertheless, not essential to the k:securing of the beneficial results of my invention, broadly regarded, and may be modified or omitted if desired.

While in the machine shown the letter receives anl upward curvature by reason of the copying roll over which it passes, therefore,

lrequiring that the arms 10 and'11 give it a downward curvature, my invention is e ually applicable to a machine in which the etter might be ldelivered forwardly and' over a copying roll, thereby giving said letter a downward curvature. In such case the po sitions of the central and lateral guides respectively, would merely be reversed.

In some cases, as when the letter or other document being copied is on very light or thin material, the ends may droop suiciently, after bending by the edges 10 and 11', as just described, to cause the forwardly moving edges of the letter, as it falls upon the receiving trayT 12, to engage with the rear edges of the letters already stacked upon l on each side of central guide 10 and not quite as far`therefrom as the lateral guides 11. The upper edges 15 lie in a plane substantially parallel to the plane of edges 1 1', but somewhat below said plane, and prevent too great a drop of the ends of the letter as it is bent by the edges 10 and 11' before the forwardly moving edge of the letter has been pushed forwardly of the rear line of the letters already stacked upon'the receiving tray.

Having described my invention, I claim:

1. In a press, in combination with a roll around and from which aletter is adapted to be delivered, a plurality of guides adapted to receive the letter located in front of said roll and projecting at right angles thereto, one of said guides being disposed to engage the central part'of the letter upon one surface thereof while others of said guides are disposed to engage the ends of the letter on the opposite surface thereof, the engaging parts of the end guides being in a. diierent 

